Thermionic activity
[化] 热离子活度
🧩 词语组成解析
a. 热离子的\\n[电] 热离
🗣️ 情景例句
about us not having dinner with the family,
对于我们无法与全家人共进晚餐一事
Ask no questions and you will be told no lies.
如果你少问，谎言就难进。
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）